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Naming Covalent/ Molecular Compounds

Naming Covalent/ Molecular Compounds. Covalent Bonds use Prefixes to indicate the number of atoms involved in the compounds. 1= mono 6 = hexa 2 = di 7= hepta 3 = tri 8 = octa 4 = tetra 9 = nina 5 = penta 10 = deca. RULES.

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Naming Covalent/ Molecular Compounds

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  1. Naming Covalent/ Molecular Compounds

  2. Covalent Bonds use Prefixes to indicate the number of atoms involved in the compounds 1= mono 6 = hexa 2 = di 7= hepta 3 = tri 8 = octa 4 = tetra 9 = nina 5 = penta 10 = deca

  3. RULES 1- The name of the first element does not get changed, only a prefix is added if it is more than one. Ex: Trisulfur tetrafluoride S3F4 2- The second element gets a different ending, as well as a prefix. Ex : phosphorus trichloride PCl3 (NOT: phosphorustrichlorine)

  4. RULES continued.. 3- If the first element in the compound is a single you do not write mono: ex. CO2 - carbon dioxide (NOT monocarbon dioxide) 4- If the element’s name starts with a vowel, and the prefix ends with a vowel, you can drop the last vowel on the prefix: ex. S5O10 - pentasulfur decoxide (NOT pentasulfur decaoxide)

  5. RULES continued.. 5- Covalent compounds do not get simplified. Name the compound exactly as you see it: Ex. H2F2 = dihydrogen difluoride (NOT hydrogen monofluoride HF)

  6. TRY THESE: • Diphosphorus pentoxide • Nitrogen monoxide • Xenon hexafluoride • Tetrarsenic decoxide e) SiO2 f) N2S5 g)P4O10 h)BrCl6

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